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l J. 'OREAGER & A. EVANS. Vapor-Condensing and Air-Warming Ap.pa.ratu's.

No. 231,766. Patented Aug. 31,1880.

wig. A.

'OOOOOQO Mm SMWM (PzM MW MPEIERS. FHOYU-LITHOGRAPHER. WASHINGTON, D. C.

UNrTEn STATES PATENT Orrrcnt JONATHAN GREAGER AND ANDERSON EVANS, OFOINOINNATI, OHIO, ASSIGNORS OF ONE-THIRD OF THEIR RIGHT TO WILHELMPIEPER,

OF SAME PLACE.

VAPOR-CONDENSING AND AIR-WARMING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 231,766, dated August31, 1880.

Application filed December 19, 1879.

county of Hamilton and State of Ohio, have jointly invented certain newand useful Vapor-Condensin g and Air-Warmin g Apparatus,

of which the following is a specification.

Our apparatus was designed primarily as an economical and effectivemeans of warming or heating air to be supplied to houses for drythekiln.

Our apparatus consists of two concentric cylinders inclined out of thehorizontal and having between them an annular air-space, the outercylinder being provided at the higher or induction end with anoutwardly-flaring or conical mouth, while the lower or eductiou endis-provided with a conical head or cap leading to a more or lesscontracted outlet communicating with a suction-blower. The heads of theinner cylinder are perforated to receive the ends of tubes, which,together with the annular space between the two cylinders, affordpassage for the air from the induction to the eduction end. Steam isadmitted to the top of the inner cylinder at the-higher end by means ofa tube extending through the outer cylinder, and the water ofcondensation es capes through an outlet-pipe leading from the bottom ofthe lower end of the inner cylinder, and extending directly downwardtherefrom through the outer casing. V

In order that our invention may be fully understood, we will proceed todescribe it in reference to the accompanying drawings, in which- Figurel is a vertical axial section of our improved apparatus. Fig. 2 showsthe same part in end elevation and the rest in transverse sectionthrough the steam-pipe.

A represents the outer shell or cylinder, in

' which is fixed concentrically a slightly-smaller making the mosteconomical use of the heatthat is possible.

The outer casing, A, has attached to its receiving end anoutwardly-flaring or conical mouth, B, that operates to cause the air toconverge toward the tubes F in the inner cylinder and annular space ,Jbetween the inner and outer cylinders.

At the delivery end the outer cylinder is provided with a conical heador cap, 0, converging from the periphery of said cylinder to asuction-pipe, c, the conical shape of said head operating to contractthe air into the outlet 0. V

The air-outlet 0 being connected to the inle of a suitable suctionapparatus, a current of air is caused to flow through the steanrheatedtubes F and passage J, so as to insure the condensation of the steam andthe heating of the air.

The water of condensation may be carried back to the boiler, while theheated air is forced or drawn through the dry-house for the purpose ofdrying the bricks, as before referred to.

Practical test has demonstrated that a heater of this plan thirty-sixinches in diameter and five feet long, filled with inch tubes, attachedto a suitable exhaust blower and supplied with exhaust-steam from anengine eight inches in diameter and sixteen inches stroke, with all thework in the open air when the atmosphere is at about the freezing-point,will heat fourteen thousand cubic feet of air per minute to 100Fahrenheit. I

Having thus described our invention, the following is what we claim asnew therein, and desire to secure by Letters Patent:

The vapor-condensing and air-heating apparatus consisting of the twoconcentric cylin- In testimony of which invention we here- 10 ders A andD, the inner one having heads EE, unto set our hands. longitudinal tubesF, steam-inlet H at the airreceiving end, and Water-outlet I at theair-de- JONATHAN GREAGER. 5 livering end, the outer one havingoutwardly- ANDERSON EVANS.

flaring mouth B, conical head 0, and outlet 0,

the whole being inclined downward from re- Attest:

ceiving to delivering end, as and for the pur- GEO. H. KNIGHT,

pose set forth. 1 WIELHELM PIESER.

